Vaccine Hesitancy in Japan: From a Perspective on Medical Uncertainty and Trans-Scientific Theory

Vaccination Education Deficits and Vaccine Hesitancy Among Healthcare Students in Japan: A Cross-Sectional Study

BACKGROUND/OBJECTIVES

Healthcare professionals' (HCPs') accurate knowledge of and positive attitudes toward immunization greatly influence society's acceptance of it. Early and appropriate immunization education for HCP students is vital. This study aimed to understand current immunization education and vaccine hesitancy among medical, nursing, and pharmacy students in Japan.

METHODS

An anonymous self-administered online questionnaire was administered to final-year medical, nursing, and pharmacy students in Japan between 6 and 31 March 2023. Survey items assessed current immunization education, preparedness for clinical practice, immunization knowledge, and the degree of vaccine hesitancy.

RESULTS

Overall, 525 students (127 (24.2%) medical, 252 (48.0%) nursing, and 146 (27.8%) pharmacy) responded, of whom 39.8% raised concerns regarding new vaccine risks (24.4%,15.9%, and 23.3%, respectively; p = 0.22) and adverse effects (14.2%, 12.7%, and 17.1%, respectively; p = 0.57), including trust in government information (61.4%, 50/4%, and 56.8%, respectively; p = 0.337) or recommended vaccines (57.5%, 4.7%, and 43.8%, respectively; p = 0.113). Preparedness for future clinical practice varied significantly among schools, with medical students (54%) feeling more prepared compared to nursing (34.3%) and pharmacy students (39.1%) (p < 0.001). The average correct immunization knowledge rate was 59.9%, with significant differences between schools (medical 62.7%, nursing 57.6%, and pharmacy 59.6%; p < 0.001). There was no significant correlation between knowledge level and self-assessed preparedness (r = 0.066, p = 0.132). The HCP students wished to receive more immunization education and sought improvements in comprehensive knowledge, communication skills, and practice-based content.

CONCLUSIONS

For Japan's HCP students, the enhancement of immunization education focusing on hesitancy and risk-benefit communication is necessary.

The COVID-19 pandemic as a modifier of DGBI symptom severity: A systematic review and meta-analysis

BACKGROUND

This SRMA reviewed and assessed the changes in the severity of disorders of gut-brain interaction (DGBI) symptoms during the COVID-19 pandemic, and evaluated factors associated with symptom severity changes.

METHODS

Electronic databases were searched until February 2024, for articles reporting on changes in symptom severity in DGBI patients during the COVID-19 pandemic. The proportion of DGBI patients who reported a change in their symptom severity were pooled using a random-effects model, and subgroup analyses were conducted to assess the effect of socio-cultural modifiers on symptom severity in DGBI.

KEY RESULTS

Twelve studies including 3610 DGBI patients found that 31.4% (95% CI, 15.9-52.5) of DGBI patients experienced symptom deterioration, while 24.3% (95% CI, 10.2-47.5) experienced improvement. Countries with high gross domestic product (GDP) had a 43.5% (95% CI, 16.3-75.2) likelihood of symptom deterioration, compared to 9.2% (95% CI, 1.4-42.2) in lower GDP countries. Similarly, countries with low COVID fatality rates had a 60.1% (95% CI, 19.7-90.3) likelihood of symptom deterioration, compared to 18.3% (95% CI, 7.8-36.9) in higher fatality rate countries. Countries with lenient COVID policies had a 58.4% (95% CI, 14.1-92.3) likelihood of symptom deterioration, compared to 19% (95% CI, 8.2-38.1) in countries with stricter policies. Patients in high vaccine hesitancy countries had a 51.4% (95% CI, 19.5-82.2) likelihood of symptom deterioration, compared to 10.6% (95% CI, 2.7-33.4) in low vaccine hesitancy countries.

CONCLUSIONS & INFERENCES

This meta-analysis reveals that a significantly higher proportion of DGBI patients experienced deterioration of symptoms during the COVID-19 pandemic. Various sociocultural, economic and environmental factors potentially modify the effects of the COVID-19 pandemic on DGBI.

How can we promote vaccination of the mass population?-Lessons from the COVID-19 vaccination defaults

While vaccines are pivotal in combating COVID-19, concerns about side effects and complex procedures have hindered complete vaccination. Prior studies suggest that individuals defaulted to opt-out exhibit higher COVID-19 vaccination rates compared to those in opt-in systems. However, these studies were conducted in countries with a tolerant attitude towards vaccination and default changes, targeting specific age groups, and did not address potential deterrents like the increase in cancellation rates on the day, discomfort towards changing defaults, or the possibility of the opt-out effect being a one-time occurrence. Under the hypothesis that the default nature of the COVID-19 vaccination system influences attitudes towards vaccination even in countries conservative about vaccination and default changes like in Japan, we aimed to examine the differences in the first and second dose vaccination rates, cancellation rates, and the number of complaints between the opt-in and opt-out systems for COVID-19 vaccination. An email survey was conducted in 10 cities in A Prefecture, Japan. The results showed not only higher COVID-19 vaccination rates across all comparable age groups in the opt-out group but also a notably smaller decrease in the second-dose vaccination rate compared to the opt-in group, all achieved without any complaints about the system's introduction. Consequently, it can be inferred that the potential inhibiting factors were largely overcome. Despite some limitations, such as regional specificity, the study suggests that opt-out systems might increase COVID-19 vaccination coverage without leading to significant cancellations or complaints, presenting a promising strategy to facilitate vaccination efforts.